Hoist.



A. L. BROUILLETTE Attorneys THE MORRIS PETERS co., PHOTG-LITHU.. WASHINGTON. D. C,

A. L. BROUILLETTE.

HOIST.

APPLICATxoN FILED FEB. 17, 1914.

LMAO@ Patented May 25, 1915.

2 SHEETS-SHEET 2.

Attorneys THE NORRIS PETERS Cov, PHOTOJJTHO.. WASHINGION, D. C

instan snare rarer onirica.

ALFRED L. BROUILLETTE, 0F CAMPBELL, NEBRASKA, .ASSIGNOR OF ONE-HALF TO ROMU'LUS C. CHEVALIER.

HIST.

armato.

Specification of Letters Patent.

Patented May 25, 1915.

T0 all whom t may concern Be it known that I, ALFRED L. BROUIL- Ln'r'rn, a citizen of the United States, residing at Campbell, in thek county of Franklin and State of Nebraska, have invented a new and useful Hoist, of which the following is a specification.

rlhe device forming the subject matter of this application is a hoist, adapted to be employed for handling automobiles and other heavy objects.

One object of the present invention is to provide novel means for procuring relative movement between the fixed and movable portions of the supporting frame.

Another object of the invention is to provide a hoisting mechanism of novel form.

rlhe invention aims to provide a structure of the type described which will possess unusual strength and be well adapted to withstand the severe usage to which hoists of this type are subjected.

lt is within the scope of the invention to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

' 1With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings :-Figure 1 shows the invention in side elevation, parts being broken away; Fig. 2 is a top plan; Fig. 3 is a side elevation; Fig. 4 is an enlarged detail taken from Fig. 1, portions of the hoisting drum being broken away; Fig. 5 is a transverse section taken through portions of the main and auxiliary frames; Fig. 6 is a sectional detail of one of the dogs; Fig. 7 is a fragmental elevation illustrating a portion of one dog and attendant parts.

In carrying out the present invention there is provided a main frame which, in its turn, comprises a pair of supports denoted generally by the numeral 1. Each support 1 comprises a horizontal foot 2 provided with casters 23. FiXed to and uprising from each foot l intermediate the ends thereof is a standard 3. Located upon each side of the standard 3 are abutments 4 which may be angle brackets, the abutments 4 being secured to the supports 1. Securing elements 5 unite the abutments 4 with each foot 2. Each standard 3 is sustained by means of short, upwardly converging braces 6 and longer, upwardly converging braces 7 The lower ends of the braces 6 and 7 are superposed and are held upon the foot 2 by means of the securing elements 8, the upper ends of the braces 6 and 7 being secured to the standard 3.

The invention further includes a U-shaped auxiliary frame 9, mounted to move vertically. The U-shaped frame 9 comprises upright arms 10, to the upper ends of which are secured spaced top bars 11, the top bars being connected with the arms by means of braces 12. Struts 14 are mounted between the top bars 11 and receive the intermediate portions of the truss rods 15, the ends of which pass through plates 16 bearing against the ends of the top bars 11, the terminals of the truss rods 15 carrying nuts 17 which engage the plates 16.

The arms 10 of the U-shaped auxiliary frame 9 are held in sliding contact with the standards 3 by means of guides 18 and 19. The guides 18 are located adjacent the upper ends of the standards 3 and are terminally secured thereto, these guides eX- tending around the inner edges of the arms 10 of the U-shaped frame 9. rlhe guides 19 are located adjacent the lower ends of the arms 10 of the U-shaped frame 9 and are secured thereto, the last mentioned guides passing around the outer edges of the standards 3. By the construction above described, the U-shaped frame 9 is connected with the supports 1 of the main frame for vertical movement.

A. means is provided for positively holding the U-shaped frame 9 in diderent positions of vertical adjustment. lVith this end in view, shafts 2O are ournaled for rotation in the arms l0 of the auxiliary frame 9. Each shaft 2O is provided at one end with a dog 21. The dogs 21 are identical in form with dogs 23 to be described hereinafter. The other end of the shaft 20 is squared as indicated at 22 and is received within a recess formed in the dog 28. A bolt 24 or other securing element passes through the shaft 20 and upon the end of the bolt 24 there is a nut 25 which engages the dog 23 to hold the same in place. Projecting from the opposite sides of Veach standard 3 are pins 26. Each dog 23 is hookedslightly as indicated at 27, so as to coperate with one of the pins 26, and in this manner, down-V Ward movement of the U-shaped auxiliary frame 9 is prevented. The outer, or terminal edges of the dogs 23 are camfshaped as vindicated at 28. Downward movement of theV dogs 21 and 23 islimited by means of a stop pin 29 which projects from the arm 10 of the auxiliary frame 9. If des1red,"one

dog may be engaged by a spring 30 securedv to the arm 10, the function of the spring 30 being to maintain the dog yieldably engaged with the stop pin 29.

` When the U-shaped auxiliary framer9 isY to the arms 10 of the frame 9. These racks 31 coact kwith pinions 32 secured to shafts 33 mounted 'in brackets 34 Vof U-form, Vthe brackets 34 embracing the standards 3 and the arms 10 of the auxiliary frame 9, the brackets, however, being secured to the standards 3. Each shaft 33 is actuated by means of a crank 35, adjustably and removably heldin place by means of aV set screw 36er the like. Y

`Secured to one of the standards 3 is a bracket 37, sustained by means of downwardly converging braces 38, the lower'ends of which are connected with the securing elements y5 which, it will be recalled, serve to hold the abutments 4 in place on the foot 2. J ournaled for rotation in the bracket 37 is a shaft 39 provided at one end with a crank 40. Mounted upon and secured to the shaft 39 are spaced drums 41. Secured to the shaft 39 betweenfthe drum 41 is a ratchet 42 adapted to coact with a pawl 43, pivoted as indicated at 44 to arms 45 projecting from the standard. 3. The pawl 43 is ma nipulated by means of a handle 46 thereon, and the pawl is yieldably held in engagement with the ratchet 42 by means of a retractile spring 47, oneend of which is secured to the pawl, the other end of which is secured to the standard 3.

The hoisting mechanism comprises ak primary pulley 48 and a secondary pulley 49, mounted to rotate between the top bars 11 of Vthe auxiliary frame'9 and located adjacent `one of the standards 3. A primary pulley 50 and a secondary pulley 51 are similarly journaled between the top bars and are located .adjacent the other standard The l pulley 51 preferably is provided with a double tread for a purpose which will be set forth hereinafter. The ,invention includes a pulley block 52 and a flexible element 53 which is carried upwardly around the .pulley 48 and thence is carried downwardly through the block 52 and upwardly around the pulley 49.V From the pulley 49, the exible element 53 passes across the pulley 51 and -is engaged in one of the treads thereof. From the pulley- 51,v the flexible Y element 53`is carried downwardly andV is attached to one,` of the winding drums f Another pulley block V55 is provided, and

' to thisp'ulley block 55 is secured ajfleXible element 56,'carriediupwar'dly `around the Vauxiliary frame 9.; During this operation,

the dogs 23 and 21 on the respectivearms 10 of the frame 9 will engage automatically with one set after another of the pins 26 on the standards 3 and thus/hold the U-shaped frame9 in adjusted positions vertically.

l Vhen the shaft 30 is manipulated by means of the crank 40, both of the drums 41 will be rotated and the eXible elements 53 andr56 will be reeled in together, thus simultaneously elevating the blocks 55 and 52.V

It will be` understood that any number of sheaves may be located in the blocks 55' and 52, the pulleys upon the U-shaped frameY 9 being increased in number accordingly, this construction being a detail welll within the scopel'of any skilled mechanic.

The pawl 43 is spring constrained to cooperate with the ratchet 42, thereby holding the tension which has been secured in the flexible elements 56 and 53. However, through the mediumof thehandle 46, the pawl 43 may be released from the ratchet 42, thus permitting Vthe object which is assembled with the pulley blocks 52 and 55 to be shifted. Y f

Having` thus described the invention, what is claimed is In a device of the class described, a mainV frame comprising supports; a U-shapedauxiliary frame comprising arms slidable upon the supports; a plurality ofrsuperposed projections on the supports; pivot elements on theV arms and disposed out of vertical aline-v ment with the projections; upwardly eX- tended, laterally inclined pawls carried by the pivot elements, the pawls including hooks adapted to engage automatically with the projections, and camsadapted to engage the projections and to tilt the paWls, there- In testimony that claim the foregoing I oy to disengage the hooks from the proas my own, I have hereto affixed my signa- ]ections when the auxiliary frame is raised; ture in the presence of two Witnesses.

rocks on the arms; shafts on the supports; ALFRED L. BROUILLETTE. 5 pinions on the shafts and engaging the Witnesses:

racks; and a hoisting mechanism on the HECTOR R. CHEVALIER,

auxiliary frame. RUDOLPH nU. CHEVALIER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. c. 

